Pneumatic-stacker hood.



AIP. DETERMANNL I PNEUMATIC STACKER H000.

APPLICATION FILED OCT. I. I917.

2 SHEETSSHEET I.

Patented Jan. 29, 1918. f

A. P. DETERMANN.

PNEUMATIC STACKER HOOD.

APPLICATION man 0on1. I917.

"Patented Jan. 29,191

2 SHEETS-SHEET 2- entrain erases mm crates.

AUGUST 1. DETERMANN,'OF LYONS, IOWA.

PNEUMATIC-STACKER H001).

Application filed October 1, 1917.

To all whom it may concern:

Be it known that I, AUoUs'r P. DETER- MANN, a citizen of the United States of America, residing at Lyons, in the county of Clinton and State of Iowa, have invented certain new and useful Improvements in Pneumatic-Stacker Hoods, of which the following is a specification.

This invention relates to improvements in hoods for pneumatic straw stackers, with special reference to my former Patents #1,121,s10 and #1,066,260 and it will be understood that it may be adapted for use on any of the various makes of stackers in common use and that the slight changes in the form or proportion of the various parts that may be necessary to render the invention applicable to particular types of stackers may be resorted to without departing from the spirit of the invention or sacrificing any of the advantages thereof.

My invention relates especially to that class of stacker hoods in which the straw or other material is carried through the hood by means of an air blast provided by any suitable means, and in which the hood is provided with an adjustable means for directing the delivery of the material from the hood and deflecting the air blast out of and away from the material being delivered in such a manner that the dust and finer particles will be carried away by the deflected blast and the material will be delivered to the stack free from both dust and blast.

Heretofore in devices of this class, the deflecting means has been unsatisfactory except when the material was in certain favorable conditi-ons, for instance when the straw was damp, a small amount would be held usually at the end of the deflecting means and more material would pile up behind it until finally the entire hood would be clogged and would have to be cleaned.

In my invention, I have successfully overcome these objections and it has for its objects: first, to provide a pneumatic stacker hood having a means for deflecting the the largest portion of the air blast out of and away from the material and a means of dissipating the remaining portion in such a manner that the material is delivered to Specification of Letters Patent.

Patented Jan. 29, 1918.

Serial No. 194,153.

the stack free from the blast and the consequent spreading influence.

Second, to provide an adjustable blast deflecting and material delivery means which will successfully deliver straw or similar material in any ordinary condition without clogging the hood.

Third, to provide a pneumatic stacker hood of few parts, simple to operate, easy to assemble and not liable to get out of order.

Further objects will be apparent through a study of the specifications and drawings.

I attain these objects by the mechanism illustrated. in the accompanying drawings in which:

Figure 1 is a side elevation of the trunk of an ordinary pneumatic stacker, my improved delivery hood being shown applied thereto.

Fig. 2 is a side elevation of my improved hood, the position of the adjustable material delivery and blast dissipating means being shown partly in dotted lines.

Fig. 3 is a plan view of the same.

Fig. 4 is a vertical longitudinal section taken on a line corresponding to line 4-4 of Fig. 3.

Fig. 5 is a perspective view of the combination material delivery and blast deflecting means.

Fig. 6 is a view in elevation of a portion of the delivery means, showing the openings for dissipating the last remaining portion of the blast.

Similar numerals refer to similar parts throughout the several views.

For the purpose of a complete understanding of my invention, I have illustrated in Fig. 1 a conventional form of a portion of a pneumatic stacker consisting of the trunk 1, the usual flexible elbow 2 connecting the movable trunk to the fixed trunk 3, a suitable adjusting mechanism 4: is adapted to adjust the trunk to any desired position.

My improved hood comprises a. tubular extension 5 adapted to engage the free end of the movable trunk 1. vThe outer end of the extension is provided with side plates 6 and 7 extending in spaced parallel relation from the extension and are preferably spaced apart a distance equal to the diameter of the extension to provide for a free delivery of the material. The outer ends of the side plates are curved downwardly for convenience and to conform to the angle of delivery.

The lower forward edge of the extension 5 is turned upwardly at 8, forming a flange, as shown in Fig. 1 and is arranged at right angles between the side plates 6 and 7. A rod or bar 9 connects the side plates immediately in front and parallel with the flange 8, thus forming a guide channel 10 extending completely across the delivery space.

An adjustable throat plate 11 is loosely mounted on a rod 12, extending transversely of the hood between the side plates 6 and 7. The ends of the rod are adjustably mounted in elongated slots 13 in the side plates, these slots extend forwardly at an upward. incline from the guide channel 10. The rod is provided with a clamping means 1% adapted to secure it in any desired position longitudinally of the slot.

From this description, it will be understood that the throat plate may be adjusted in varying positions relative to the front edge of the tubular extension 5 and thus control the size of the delivery opening to compensate for the different kinds and conditions of material being handled. The throat plate is adapted to turn the air blast upwardly to assist in separating it from. the material being delivered. A shaft or bar 15 is rotatably mounted in the brackets 16, se cured to the side plates 6 and 7. This shaft is located immediately in front of and slightly above the upper front edge of the tubular extension 5 and extends transversely between the side plate brackets 16, the extension 5 being flattened at its upper front adjacent the shaft.

Secured to the shaft 15 and projecting forwardly and downwardly are a series oi spaced rods 17. This series of rods is adapted to act as a guide for turning the straw downwardly and at the same time allow most of the blast which has been turned upwardly by the throat plate 11 to pass through carrying the dust with it.

li lounted on each end of the shaft 15 and secured thereto are side bars 18 extending outwardly and downwardly between the side plates 6 and 7 and beyond the straw guide rods 17, a sheet metal air deflector 19 is curved to conform to the shape of the bars 18 and extends transversely between the outer ends of the bars and is secured. thereto by means of the rivets through the upturned flanges 20. The air deflector is preferably formed of a single piece and the lower edge is turned to form a head through which the rod 21 extends and is secured to the side bars 18. The upper edge of the air deflector extends to a point immediately above the masses ends of the straw guide rods and is curved upwardly ending at the upper edge of the side bars 18. This particular shape of the upper edge of the deflector is found to be necessary in practice as when made in this form, if straw catches on the edge of the deflector it will be pulled down into the hood while if a complete roll is formed at the edge, the straw will be held and finally clog the hood.

The air deflector is provided with spaced stiffening ribs 22, extending longitudinally ancll terminating a short distance from either enc. breaking up and deflecting the remaining portion of the air blast toward the small openings or slots 23, arranged between the ribs. These slots are preferably V shaped withthe point down and are formed by slitting the metal and forcing the center of the metal above the slot inwardly, thus while allowing a free passage for the remaining portion of the blast, effectually preventsthe straw from catching on the deflector. This construction is illustrated in Figs. 6 and 7.

Angle irons 2st are secured to the side plates 6 and 7 as shown in Fig. i and are adapted to act as stops for the side bars 18 and limit the downward movement of the combined straw guide and air deflector.

The shaft 15 is provided at its outer ends with arms 25, extending upwardly there from and connected to the side plates (3 and 7 by means of the springs 26.

The arms 25 are provided with downwardly extending portions 27 which are connected to the side bars 18 by means of the braces 28.

A rod 29 connects the arms 25 and to which is secured a means 30 for moving the arms 25.

l Vith this description, it will be obvious that the shaft 15 may be partially rotated and the combined straw guide and deflector ad usted to any desired position.

In operation, the material is propelled into the hood by the air blast and is deflected by the throat plate 11, thereby caus= ing the greater portion of the blast to pass out through the openings between the rods 17, the force of the blast causing the material to pass over the throat plate. It is then guided by the rods against the air deflector 19, where the remaining portion of the blast is broken up by means of the ribs 22 and deflected toward the openings 23, where it is entirely dissipated and the material being entirely relieved of the blast falls solely by gravitation and any objectionable scattering of the material is thereby avoided.

Having thus described my invention, what I claim is:

1. In a pneumatic stacker hood, the com- These ribs are also for the purpose of 7 bination with a tubular extension, of side plates extending in parallel spaced relation therefrom, a straw guide located between said side plates, an adjustable throat plate in said tubular extension and adapted to defiect an air blast against said straw guide, a downwardly curved air deflector between said side plates and at the outer end of said straw guide.

2. In a pneumatic stacker hood the combination with a tubular extension, of side plates projecting in spaced parallel relation therefrom, a movable support mounted on said hood, a straw guide mounted on said support and comprising rods projecting in parallel spaced relation. between said side plates, and a curved air deflector mounted on said support, extending downwardly and outwardly from a point immediately above the ends of said rods, said air defiector being provided with openings adapted to allow the passage of air.

3. The combination with a pneumatic stacker hood of a shaft rotatably mounted on said hood, a straw guide secured to said shaft and comprising curved rods in spaced parallel relation, curved side bars secured to the ends of said shaft and extending be- Ccpies of this patent may be obtained for five cents each, by addressing the Commissioner 0! Patents, 7 Washington, D. 0."

yond and parallel with said rods, an air deflector secured to the ends of said side bars beyond straw guide, said air deflector corresponding in curvature with said side rods and being provided with openings.

4. The combination with a pneumatic stacker hood of a curved air deflector member thereon, ribs on the inner surface of said air deflector, and V shaped openings between said ribs.

5. The combination with a pneumatic stacker hood of a curved sheet metal air deflector supported thereon, vertical ribs formed on the inner surface of said air defiector and in spaced relation, openings between said ribs, the upper edge of said openings being pressed inwardly and the lower edge pressed outwardly.

6. In a pneumatic stacker hood, the combination with a curved sheet metal air deflector mounted thereon of ribs formed in parallel spaced relation on the inner surface of said deflector, rows of approximately V shaped slits between said ribs, the center of the upper edge of said slits being pressed inwardly, and the lower edge of said slits being pressed outwardly.

' AUGUST P. DETERMANN. 

